Window-screen.



No. 725,319. PATENTED APR. 14, 1903.

' E. B. GROCKER.

WINDOW SCREEN. APPLIUATION FILED 213.21, 1903;

: '.1 S-SHBETIL y N0 MODEL. V

PATENTED APR, 14, 1903.'.V E. B. GROCKER.

4 WINDOW SCREEN.

APPLIUATIQN FILED FEB. 2, 190s.

F0 MODEL.

a sHBBT-SHEBT 2.

v5 uw fr. @www 3 SHEETS-SHEET 3.'

PATENTBD A151144, 1903. E. B. CROGKBR. WINDOW SCREEN. APPLIOATION FILEDFEB 2, 1903 H0 MODEL UNTTED STATES s PA TENT OFFICE.

ERNEST B. CROOKER, OF BOSTON, MASSACHUSETTS.

WINDOW-SCREEN.

SPECIFICATION forming part of Letters Patent No. 725,319, dated April14, 1903.

I Application iiled February 2, 1903. Serial No. 141.420. (No model.)

To @ZZ whom `it may .concer-71,;

Be it known thatI, ERNEST B. GRocKER, of Boston, county of Suffolk,State of Massachusetts, have invented an Improvement in Window-Screens,of which the Vfollowing description, in connection with the accompanyingdrawings, is a specification, like characters on the drawingsrepresenting like parts.

This invention relates to roller windowscreens. In the manufacture ofscreens of this type it has been customary to interpose compensatingsprings between the roller on which the screen is wound and theactuating means for said roller; but in case of a wide screen there isliability of the screen swerving more or less to one side or the otheras it is operated by reason of the springs acting independently-that is,the spring at one end of the screen-roll yielding more than-the springat the opposite end of said roll ,and my invention has for its object toprovide Va specific form of limiting-stop for limiting the upwardmovement of the screen, also to construct the lower end of the verticalguideplate for the screen in such manner that it is adapted to receiveand support the pulley around which the tape passes, which passes upover another pulley at the upper end of said guide-plate and isconnected with the upper edge of the screen, also to provide specificmeans for attaching the metallic tape to the upper edge of the screen.

Figure 1 shows in front elevation a roller window-screen embodying thisinvention. Fig. 2 is an enlarged vertical section of the screen,taken onthe dotted line 2 2, Fig. 1. Fig. 3 is a horizontal section of thescreen shown in Fig. 2, taken on the dotted line 3 3. Fig. 4 is alongitudinal section of the screen-roll and end support therefor. Fig. 5is a detail view yof the bar which connects the outer ends of thecompensating springs. Figs. 6,

-7, 8, and 9 are details showing the two compensating springs. Fig. 10isa detail of the screen-roll. Figs. 11 and 12 are details of thepulleys or drums at the ends loi' the screenroll. Fig. 13 is across-section of the screenroll, taken on the dottedline 13 13, Fig. 4.Figs. 14 and 15 are details of one of the guideplates. Figs. 16 and 17are details of the limiting-stop for the screen. Figs. 18, 19,

and 2O are details showing the means for attaching the tape ,to theupperA edge of the screen and means for reinforcing or binding the upperedge of the screen. Fig. 2l is a de- 55 tail of a plate used to coverthe opening at the lower end of the guide-plate.

Ct represents the tubular cylinder or roll, on which the screen a iswound. This roll will be made ofany suitable length and diameter. At 6oeach end of the screen-roll aapulley or drum b is provided,and eachpulley or drum has a hub which is adapted to project into andy looselyiit the open end .of the screen-roll. The hub of each pulley or drumcomprises an enlarged portionl b and a reduced end portion b2, 'theformer loosely tting the open end of y the screen-roll and serving asabearing or support for the end of the screen-roll and the laty,terserving as a point of attachment for the 7o outer end of thecompensating spring, to be described. i The pulleys or drums aresuitably supported in fixed bearings, to be hereinafter described, andconsequently the screen-roll is supported and freely revoluble on thehubs of said pulleys'or drums. Within the screenroll two spiral springsc d are placed, they being made as a right and left spring,respectively, and disposed at opposite ends of the 8o screen-roll. Theinner ends of the springs c and d are attached to the screen-rollandfthe outer ends to the hubs of the'pulleys or drums. The springs cand d, which connect the screenroll y,with the pulleys or drums, serveas cornpensating springs forthe screen.

As a means vof attaching the inner ends of the springs to the screenroll said roll is formed withlips a2, which are struck inward and leaveopenings in the roll, and the inner 9o ends of the springs are bent toengage the extremities of saidv lips.

As a means of attaching the outer ends of the springs tothe hubs of thepulleys or drums said hubs are formed with slots b3, through which theouter end portionsof the springs pass. Thus it will be seen that thescreen-roll is connected with the pulleys or drums by two compensatingsprings, which are oppositely disposed at the opposite ends roo of thescreen-roll.

To prevent the springs acting independently or one moving or yieldingindependently of and more than the other, or, in other words, topositively insure the two oppositelydisposed springs operating inunison, I connect the outer ends of said springs together. The meansherein shown for accomplishing this result consists of a bar e,contained in the screenroll, which is made of suitable length, itsopposite ends entering but not engaging the open ends of the tubularhubs of the pulleys or drums, and the ends of said bar are slotted, asat e', to receive the outer ends of the springs after said ends havepassed through the slots in the hubs. The bar is thus connectedpositively with the outer ends of the springs, and the outer ends of theoppositely-disposed springs are positively connected together, so as tooperate in unison.

At the opposite sides of the screen vertical guide-plates are providedwhich extend along the sides of the casing, and said guide-plates areherein shown as formed of sheet metal folded to produce a right-angularpassage, in one part ot which, asf, the pulleys or drums are placed, andin the other part of which, asf', the edge of the screen runs.

At the lower ends of the guide-plates the pulleys or drums b aresupported, and, as herein shown, the inner wall of each guide-plate hasa hole f2, throughwhich the hub of the pulley or drum projects, the partb' thereof loosely fitting and having its bearing in said hole. In theouter wall of each guide-plate a larger hole f3 (see dotted lines, Fig.15) is formed, through which the pulley or drum passes, therebyadmitting the pulley or drum to the compartment. The pulleys or drumshaving been placed in position, the hole f3 is closed by a plate f4. Atthe upper end of each guide plate a pulley g is supported, which ismounted loosely upon a stud g', which serves as a pivot therefor. Ametallic tape h is connected to the pulley or drum Z), which passes upthrough the compartment f and over the pulley g and then down to theupper edge of the screen.

The pulley or drum b is formed with a hook blo, and the tape h passesaround said pulley or drum and is turned in under said hook bw tothereby connectit with the pulley or drum.

At the upper edge of the screen a a crossstrip t' is secured, thev endsof which are formed with wings having a plurality of overturned lips,the lip t" being turned over on the back side of the plate, the lip t2being turned over on the front side of the plate, and the lip 3 beingturned up onthe front side of the plate, and the metallic tape 7L passesdown between the lip t" and plate and then around the lip t3 and upbetween the lip/t'2 and plate. The metallic tape is thus attached to theupper edge of the screen without the employment of rivets or otherfastenings.

The outer or side edges of the screen are attached to the plate 11 bystaples 715 or other equivalent fastenings, and the side edges of thescreen thus attached to the ends of the plate t' enter the compartmentsf' of the guide-plates. The upper edge 'i6 of the plate 2' is turnedover at right angles, and a strip of rubber 7 is laid on top of saidportion t, and the upper edge of the screen is bent around said parts fiand t7, and a U-shaped clip t8 is thrust onto the screen covered parts tt?, which positively holds the screen and parts t6 7 assembled.

As a limiting stop to limit the upward movement of the screenacorrugated plate fn is placed in the compartment f at the upper end of'the guide-plate, and said plate n is formed integral with the plate n',which is contained in the compartment f, said plate n having a holethrough it for the pivot-stud g of the pulley g. The plate n' is thusheld in place by said pivot-stud. The upper edge of the plate n.' isbent at :right-angles, as at n2, to form a lip which covers the openingat the upperend of the compartment f.

A semicircular plate 'm is provided which covers, and thereby conceals,the screen-roll, said plate being attached at its ends to theguide-plates- Having thus described my invention, what I claim as new,and desire to secure by Letters Patent, is-

l. In a rolling window-screen, the combi-4 nation of a tubularscreen-roll and screen thereon, a pulley or drum at each end of saidpulleys or drums, and means for connecting l the outer ends of saidsprings together consisting of a bar passing through the screenroll tothe opposite ends of which the outer ends of said springs are attached,substantially as described.

2. In a rolling window-screen, the combination of a tubular screen-rolland a screen thereon, a pulley or drum at each end of said screen-roll,each pulley or drum having ahub which enters the open end of saidscreenroll, two oppositely-disposed compensating springs contained insaid screen-roll, connected at their inner ends to said screen-roll andat their outer ends to said hubs, and means for connecting the outerends of said springs together, consisting of a bar passing through thescreen-roll to the opposite ends of which the outer ends of the springsare attached, substantially as described.

3. In a rolling window-screen, the combination of a tubular screen-roll,a screen thereon, a pulley or drum at each end of said screen-roll, eachpulley or drum having a hub which enters the open end of saidscreenroll, two oppositely-disposed compensating springs contained insaid screen-roll connected at their inner ends to said screen-roll andat their outer ends to said hubs, and a bar contained in saidscreen-roll which passes through the compensating springs and isattached to their outer ends, substantially asV described.

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4. In a rolling window-screen, the combination of a tubular screen-roll,a screen thereon, a pulley or drum at each end of said screen-roll, twooppositely-disposed compensating springs contained in said screen-roll,which are connected at their inner ends to said screen-roll and at theirouter ends to saidV pulleys or drums, and means for connecting the outerends of said springs together consisting of a bar formed at its oppositeends with slots which receive the outer ends of said springs,substantially as described. Y l

5. Ina rolling window-screen, the combination of a tubular screen-roll,a screen thereon, a pulley or drum at each end of said screen-roll, eachpulley or drum having a slotted hub which enters the open end of saidscreen-roll, two oppositely-disposed compensating springs contained insaid screen-roll, the inner ends of which are connected to saidscreen-roll and the outer ends pass through the slots in said hubs, anda bar contained in the screen-roll to which the outer `ends of saidsprings are attached, substantially as described.

6. In a rolling window-screen, the combination of a tubular screen-rolland a screen thereon, a pulley or dru m at each end of said screen-roll,each pulley or drum having a slotted hub which enters the open end ofsaid screen-roll, two oppositely-disposed compensating springs containedin said screen-roll, the inner ends of which are connected to saidscreen-roll, and the outer ends pass through the slots in said hubs, anda bar contained in the screen-roll having slots at each end whichreceive the outer ends of said compenv sating springs, substantially asdescribed.

7. In a rolling window-screen, the combination of a tubular screen-rollhaving inwardly-bent lips and openings, a screen on said roll, a pulleyor drum at each end of said roll, a pair of oppositely-disposedcompensating springs contained in said roll, each having Vits inner endformed with a hook for engagement with one of saidlips and having itsouter end connected to one ofthe pulleys or drums, and means forconnecting the outer ends of said springs together, substantially asdescribed.

. 8. In a rolling window-screen, the combination of a pair ofguide-plates, a pulley supported by each guide-plate, a screen-rollhaving a screen thereon, pulleys or drums at the opposite ends of saidscreen-roll, tapes eX- tending from said pulleys or drums over thepulleys supported by the guide-plates, and a stop for limiting theupward movement of the screen attached to each guide-plate, consistingof a corrugated plate interposed between the walls of said guide-plate,and means for attaching it tosaid guide-plate, substantially asdescribed. f

9. In a rolling window-screen, the combination of a pair ofguide-plates, a pulley supported by each guide-plate, a screen-rollhaving a screen thereon, pulleys or drums at the opposite Vends of saidscreen-roll, tapes eX- tending from said pulleys or drums over thepulleys supported by the guide-plates, and a stop for limiting theupward movement of the screen attached to each guide-plate, consistingof a corrugatedplate interposed between the walls of said guide-plate,and a vertical portion having a perforation for the stud on which thepulley is mounted, substantially as described.

l0. Ina rolling window-screen, the combination of a pair ofguide-plates, a pulley supported by each guide-plate, a screen-rollhaving a screen thereon, pulleys or drums at the opposite ends of saidscreen-roll, tapes eX- tending from said kpulleys or drums over thepulley supported by the guide-plates, and-a stopfor limiting the upwardmovement of the screen attached to each guide-plate consisting of acorrugated plate interposed between the walls of said guide-plate andmeans for attaching it to said guide-plate, and a lip which closes theopening at the top of the guide-plate, substantially as described.

11. Ina rolling window-screen, the combination of a screen-roll andscreen thereon, vertical guide-plates at the opposite ends of said roll,a pair of pulleys or drums at the lower ends of said guide-plates havinghubs which support the screen-roll, holes in the adjacent faces of saidguide-plates through which said hubs pass and have their bearings, andholes in said guide-plates opposite the aforesaid holes which admit ofthe passage of the pulleys or drums, substantially as de scribed.

12'. In a rolling window-screen, the combination of a screen-roll andscreen thereon, a plate extending across vthe upper end of said screenhaving wings at each end, each wing having an inwardly-turned horizontallip;r

alongits outer surface, an inwardly-turned horizontal lip along itsinner surface, and an upwardly-turned lip along its inner surface, andtapes extending over pulleys with their opposite ends connected withVthe screen by said lips, substantially as described.

13. In a rolling window-screen, the combination of atnbular screen-rolland screen thereon, a pulley or drum supported at each end of said roll,each pulley or drum having a hub which enters the open end of said rolland serves as a support for said roll, a pair of oppositely-disposedcompensating springs contained in said roll which are connected at theirinner ends to the roll, and at their outer lends to said hubs, and meansfor connecting the outer ends of said springs together, sub-V stantiallyas described. In testimony whereof I have signed my name to thisspecification in the presence of two subscribing witnesses.

ERNEST B. CROCKER. Witnesses:

B. J. Novus, I-I. B. DAVIS.

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